IFC2x4 Alpha Summary
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The purpose of the IFC2x Edition 4 is to enhance the capability of the IFC specification in several areas of building elements, building service elements and structural elements and accompanying basic definitions. It also corrects several known technical problems found since the release of the IFC2x Edition 3 specification and to improve the documentation generally. Some elements that have been deprecated in earlier releases have been removed or adjusted.A "What's new" section is added to the specification to a quick overview of major changes, the IFC2x3 TC1 to IFC2x4 alpha change log should be consulted for more details.
Purpose of the alpha release
The main purpose of publishing the IFC2x4 alpha release is to encourage the international buildingSMART community to provide early feedback and issue reports in order to increase quality and implementability of the next IFC release.
Invitation for review
We invite all interested parties to review and comment on the IFC2x4 alpha release. See "how to use the issue database" on details for registration and usage of the issue database. The IFC2x4 alpha review process has been open until 21. November 2008.
NOTE: The official review period for IFC2x4 alpha is closed. Issues can however still be logged, the resolution however might go into a later stage of IFC2x4 or general IFC development.